slope tuning

[sportinawoody]

can anyone tell me the proper way to build a histogram for slope tuning ? should i use trims or wideband? all my maf is being built from an afr500. On cold start is pegged lean and cant decipher if its fuel or maf related. i used supplied data that came with my tube so i want to know injectors are right before messing with maf curve. i came up with a Slope Effective PW Avg. of 3.471******* for ID 1050. does that sound right?

[Ranger Coyote]

You should be able to use the data Injector Dynamics provides. Did you already try this and it's not working?

ID1050x-Ford-Characterization-Tables-11-17-16.xls

[sportinawoody]

yes its working but i want to log the fuel error before and after breakpoint. i think ive figured out my lean issue elsewhere but i still want to dial the slopes in as close to perfect as i can and for educational purposes. I'm just not good with the variables to log to find the errors before and after the average breakpoint p/w